tests/base_covar_int.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import kernel
  16
  17 redef class Discrete
  18         fun foo(o: OTHER): Bool is abstract
  19 end
  20
  21 redef class Int
  22         redef fun foo(o) do return self < o
  23 end
  24
  25 redef class Char
  26         redef fun foo(o) do return self < o
  27 end
  28
  29 var d1: Discrete = 1
  30 var d2: Discrete = 2
  31 var c1: Discrete = 'a'
  32 var c2: Discrete = 'b'
  33 1.foo(2).output
  34 d1.foo(2).output
  35 #alt1#c1.foo(2).output
  36 #alt2#1.foo(d2).output
  37 d1.foo(d2).output
  38 #alt3#c1.foo(d2).output
  39 #alt4#1.foo(c2).output
  40 #alt5#d1.foo(c2).output
  41 c1.foo(c2).output